Nut-lock.



H. CARTER.

Patented Mar. 31, 1914.

@FFICE.

HENRY CARTER, OF KANSAS CITY, MISSOURI.

NUT-LOCK.

Specification of Letters Patent.

Patented Mar. 31, 1914.

Application filed June 23, 1913. Serial No. 775,357.

To all whom it may COILCG'ML.

Be it known that I, HENRY CARTER, a c1t1- zen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented. certain new and useful Improvements in Nut-Locks; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to nut locks, and has for its principal object to provide a devlce of that type comprising bolt and nut members adapted for locking relation through the medium of a key, which may be inserted when the nut is tightened on the bolt, and locked in place to prevent loss or loosening of the nut.

In accomplishing this object I have provided improved details of structure, the preferred form of which is illustrated in the accompanying drawing wherein Figure I is a perspective view of a nut constructed according to my invention, and adapted for receiving a locking key. Fig. II is an end view of the nut located on a bolt, and showing the locking key in place. Fig. III is an elevation of the device showing the locking parts in section.

Referring more in detail to the parts :1 designates a bolt having the usual head 2 and threaded shank 3, the latter being provided with a longitudinal groove 4, which extends through the threaded portion of the shank, and opens through the end of the bolt.

5 designates a nut, having a body of the usual construction, and provided with an extension 6 comprising a barrel 7 having a smooth inner face of greater diameter than the threaded part of the body, and having corner bosses 8. Extending vertically through the bodies of the corner bosses, and opening through the barrel to the interior thereof, are sockets 9, which taper downwardly and inwardly to form pockets for the locking key, the upper faces of the bosses having grooves 10 communicating with the upper portions of the sockets.

Rising from the upper edges of the bosses 8 at the edges of the sockets 9 are lips 11,

which are adapted to bend laterally as illustratcd in Figs. II and III to clamp a locking key 12, when the latter is located within the socket. The key 12 comprises a wedge shaped metal block. which tapers downwardly and inwardly to fit within one of the wedge shaped sockets, and has an ear 13 adapted for projection through and beyond the grooves 10 of the corner bosses, so that should it be desired to remove the nut from its bolt, a tool may be driven against the end of the ear to loosen the key and drive same from the nut.

In using the device, the bolt is placed through the parts to be connected and a nut applied in the usual manner, the nut being tightened against a connected part and turned until one of the key sockets registers with the bolt groove. With the socket and groove in registration, the key is driven into the nut with its inner end projected into the bolt groove, and when the key is tightened, the ears 11 are bent over the free end of the key to hold the latter in place and prevent its accidental escape from the nut.

It is apparent that with the present construction, the key may be placed in any one of the corner bosses so that a fractional turn of the nut will always bring one of the key sockets into registration with the bolt groove, thereby providing for locking the parts when the nut is tight against a con nected part.

It is also apparent that by having the key wedge shaped, it is forced inwardly toward the bolt when driven into its socket, and is wedged into the socket so that friction of the parts helps to retain the key in place, the end lips, however, serving to positively hold the key when they are folded over its outer edge.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters-Patent, is

1. The combination with a bolt havinga groove extending longitudinally through its threaded part, of a nut on said bolt having an inwardly tapered longitudinal groove opening through its outer edge, and having a transverse groove in its outer edge communicating with the tapered groove, a wedge shaped key adapted for seating in the bolt and nut groove and having a wing for projection into the transverse nut groove and laterally beyond the grooved part, and lips integral with the nut and arranged at opposite sides of the longitudinal groove, for the purpose set forth.

2. The combination with a bolt having a longitudinal groove therein, of a nut having a collar on its outer end of greater diameter than the threaded portion of the nut, and having a longitudinal groove therein and a transverse groove at its outer edge opening into the longitudinal groove, and a key ing a body portion seated in the longitudinal nut groove and projected into the bolt groove, and having a wing seated in the lateral nut groove and projected beyond the outer face of said extension, substantially as set forth.

3. The combination with a bolt, having a groove extending longitudinally through its key, substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY CARTER.

Witnesses:

ARTHUR W. CArs, LETA E. COATS.

copies of this patent may be obtained for five cents each, by addressing the Commissioner 01 Patenta. Washington, D. G. 

